package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * @author rookie001
 * @creat 2023-04-30-9:33
 */
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
   //添加购物车
    @Override
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        //获取操作者id
        shoppingCart.setUserId(BaseContext.getCurrentId());
       List<ShoppingCart> shoppingCartList =shoppingCartMapper.list(shoppingCart);
       if (shoppingCartMapper!=null && shoppingCartList.size()==1){
           //如果存在 更新数量
           shoppingCart  = shoppingCartList.get(0);
           shoppingCart.setNumber(shoppingCart.getNumber() + 1);
           shoppingCartMapper.updateNumberById(shoppingCart);//更新菜品数量
       }else {
           //如果不存在，插入数据，数量就是1
           //判断当前添加到购物车的是菜品还是套餐
           Long dishId = shoppingCartDTO.getDishId();
           if (dishId != null){
               //添加到购物车的为 菜品
               Dish dish = dishMapper.getByid(dishId);
               shoppingCart.setName(dish.getName());
               shoppingCart.setImage(dish.getImage());
               shoppingCart.setAmount(dish.getPrice());
           }else {
               //添加到购物车的为 套餐
               Setmeal setmeal = setmealMapper.getByid(shoppingCartDTO.getSetmealId());
               shoppingCart.setName(setmeal.getName());
               shoppingCart.setImage(setmeal.getImage());
               shoppingCart.setAmount(setmeal.getPrice());
           }
           shoppingCart.setNumber(1);
           shoppingCart.setCreateTime(LocalDateTime.now());
           shoppingCartMapper.insert(shoppingCart);
       }

    }
//查看购物车
    @Override
    public List<ShoppingCart> showShoppingCart() {
        ShoppingCart shoppingCart=ShoppingCart.builder().userId(BaseContext.getCurrentId()).build();
        return shoppingCartMapper.list(shoppingCart);
    }
    //清空购物车
    @Override
    public void cleanShoppingCart() {
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
    }
}
